Cell phone signal blockers can interfere with and block major mobile phone signals in China, such as: 2G, 3G, 4G, 5G, GPS, WIFI, 2.5G. Now the widely used 5G signal can also be blocked normally. It can be used in many institutions such as: school examination rooms, prisons, guards, banks, conference rooms, military and other places. In order to ensure the fairness of the examination, many examination rooms also install such equipment, and some simulation examination rooms have also purchased this equipment as a necessary equipment sequence. Then the question is that many people still don’t know how to choose the right mobile phone signal blocker for themselves.
1. Choose a mobile phone signal blocker manufacturer and get first-hand sources
① Compare products from three manufacturers and select a few reliable manufacturers to investigate the quality, technical means and brand of the products;
② Check the manufacturer's technical personnel and technical use plans on the Internet to get a preliminary understanding and communicate, and listen to technical explanations;
2. On-site test of actual effects
Select the best products from these three manufacturers to enter the on-site car market, and then compare the test results to select the best equipment;
3. Investigate the actual product case effects
① After testing the product, you can go to several companies that are using this product for inspection;
② During the inspection, it is best to bring the mobile phone into the shielding area after approval to verify the shielding effect.